The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 1998
Filed:
Apr. 27, 1995
Toyoda Koki Kabushiki Kaisha, Kariya, JP;
Abstract
An apparatus for machining a workpiece which has a non-revolute symmetrical and aspherical surface with a rotating grinding wheel. The apparatus comprises a workpiece supporting member supporting the workpiece and a wheel head providing the grinding wheel an outer peripheral surface of which takes a form of a part of a spherical shape. The workpiece and the grinding wheel are relatively moved by a first drive mechanism in an infeed direction, the workpiece supporting member and the wheel head are relatively moved by a second drive mechanism in a traverse feed direction perpendicular to the infeed direction, and the workpiece supporting member and the wheel head are relatively moved by a third drive mechanism in a pitch feed direction perpendicular to both of the infeed direction and the traverse feed direction. A truing device is moved by the second drive mechanism in the traverse feed direction relative to the grinding wheel, and has a truing element rotatable about an axis perpendicular to a rotational axis of the grinding wheel through a spherical center thereof. The first, second and third drive mechanisms are controlled by a control device based upon the aspherical shape data for the workpiece.